You mean the Corbon Hunter with a 300 grain bullet at 1300 fps?
The one where they they say:
"CorBon has given the 45 COLT cartridge hunting loads worthy of the designation: +P. These are true high performance loads with the attached +P as an additional caution. In the appropriate modern hunting pistol, our .45 COLT +P loads give near 44 Magnum performance with markedly less recoil.
This is NOT plinking ammo, this load should only be used in those guns that have the steel to handle the power. Guns in .45 COLT that are built on heavy duty frames, such as the Ruger, Freedom Arms, Colt Anaconda, and Thompson-Center Contender will handle this load with authority. This load is NOT intended for handguns such as older Smith & Wesson, Colt Single Action Army, or the Colt clones imported single action revolvers. Common sense needs to prevail! THIS IS NOT COWBOY AMMO!"
If you want more power, Buffalo bore has a series of standard pressure loads more powerful than usual.